No vacation overlaps over 3 days at the time

[StevenBts]

Hello,

I've started studiyng computer science and tried adding a Rule for certain Departments, so that affected employes can't take more than 3 Days of overlapping vacation. (Wich is a Rule where i work at). Is there any way to add that or to send you my Code?

Props to your Project

Sincerely,

Steven